A. the rod must allow a clearance of at least 0.3 ern over the cartridge diameter
B. the rod shall be same as that of roof bolting drill
C. there is no such conditions to be adhered for fixing diameter of rod
D. it depends on the face dimension and of drill pattern fixed by CM
Answer: Option A
This Question Belongs to Mining Engineering >> Drilling And Blasting
Which of the following prime characteristic the nonel blasting has?
A. It has greater shock to the surrounding
B. It is noiseless in character
C. It has tremendous effect on explosive column
D. It can not be used in a place where there is a chance of stray current
A. Fire, Explosion
B. Gas, Outburt
C. Rockburst, bump
D. None
Cyclone, bag filter and scrubber can be used for control.
A. Water pollution
B. Soil pollution
C. Air pollution
D. Noise pollution
A two phase system in which an inner or dispersed phase is distributed in an outer called
A. Emulsion
B. Slurry
C. Explosion
D. Erosion
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